<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  
  <script>
    // JavaScript: ImmutableJS
    const info = {
      name: "why",
      age: 20
    }

    const obj = {...info};

    info.name = "kobe";

    console.log(obj.name); // name

  </script>
</body>
</html>